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Three-dimensional printing device

a printing device and three-dimensional technology, applied in the field of printing devices, can solve the problems of unfavorable 3d printing object quality and likely affect of the irradiation uni

Active Publication Date: 2020-08-25
XYZPRINTING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]Based on the above, an entrance pupil position of the projecting lens of an embodiment of the disclosure is ENP, and 2000 mm≤ENP≤15000 mm. An exit pupil position of the projecting lens is EXP, and 2000 mm≤|EXP|≤15000 mm. A size of an image projected by the projecting lens dose not tend to be changed with a distance tolerance between an imaging surface and the projecting lens, which benefit the quality of the 3D printing object.

Problems solved by technology

However, a size of an image projected by the irradiation unit is likely to be affected by distance tolerance between an imaging surface and the irradiation unit, which is unfavorable for quality of the 3D printing object.

Method used

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Embodiment Construction

[0018]Reference will now be made in detail to the exemplary embodiments of the disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.

[0019]FIG. 1 is a schematic view of a three-dimensional printing device according to an embodiment of the disclosure. Cartesian coordinates X-Y-Z are provided in FIG. 1 for easy description. Referring to FIG. 1, in this embodiment, a three-dimensional printing device 100 is, for example, a stereo lithography (SL) device. The three-dimensional printing device 100 includes a tank 110, a forming stage 120 and an irradiation unit 130. The tank 110 is filled with a liquid forming material 200. The forming stage 120 is movably disposed in the tank 110 and has a carrying surface 120a facing the irradiation unit 130. For instance, the forming stage 120 may move along a Z-axis direction with respect to the tank 110 ...

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Abstract

The disclosure provides a three-dimensional (3D) printing device including a tank, a forming stage and an irradiation unit. The tank is filled with a liquid forming material. The forming stage is movably disposed at the tank. The irradiation unit is disposed beside the tank and includes an image source and a projecting lens. The image source is used to emit an image beam. The image beam passes through the projecting lens to irradiate and cure the liquid forming material. An entrance pupil position of the projecting lens is ENP and 2000 mm≤ENP≤15000 mm. An exit pupil position of the projecting lens is EXP and 2000 mm≤|EXP|≤15000 mm.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the priority benefit of China application serial no. 201710362266.4, filed on May 22, 2017. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.BACKGROUNDTechnical Field[0002]The disclosure relates to a printing device and particularly relates to a three-dimensional printing device.Description of Related Art[0003]In recent years, with the progress of technology, many different ways of using additive manufacturing technology such as layer-by-layer model construction to construct a physical three-dimensional (3D) model have been proposed. Generally, the additive manufacturing technology converts design data of a 3D model constructed using software such as computer aided design (CAD) to a plurality of thin (quasi-two-dimensional) cross-sectional layers that are stacked continuously. In the meanwhile, many technical means capable of form...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B29C64/264G02B9/64G03B21/134G02B13/16B33Y30/00B29C64/129
CPCB29C64/129B33Y30/00G03B21/134B29C64/264G02B13/16G02B9/64
Inventor LEE, WEI-HUASYU, YU-HSIEN
Owner XYZPRINTING
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